oxygen evolving enhancer 3 (PsbQ) family protein. similar to PSBQ/PSBQ-1/PSBQA, calcium ion binding [Arabidopsis thaliana] (TAIR:AT4G21280.2); similar to hypothetical protein [Vitis vinifera] (GB:CAN78127.1); contains InterPro domain Photosystem II oxygen evolving complex protein PsbQ; (InterPro:IPR008797)